Question: Prepare a Mann-Whitney Test for the following data about customer satisfaction for two Dry Cleaners stores. Process at the 1% level of risk.

Lee’s Dry Cleaning Grant’s Dry Cleaning

\[{{s}_{1}}=220.5\] \[{{s}_{2}}\] = 198.5

\[{{n}_{1}}\] = 24 \[{{n}_{2}}\] = 24

\[{{\bar{R}}_{1}}\] = 18.725 \[{{\bar{R}}_{2}}\] = 15.125

H0: The samples come from the same distribution

H1: The samples DON’T come from the same distribution